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        Electra Cables | 16mm² Single Core Black Building Wire 20m Cut | Stranded Copper, PVC Insulated

        The Electra Cables 16BW-B20 is a 16mm² single core black building wire, supplied as a 20 metre cut length. The 16BW-B20 uses a stranded copper conductor with PVC insulation and is ordered at Sparky Direct under the code 7-170BWBK. It is made for fixed wiring in conduit and other protected cable routes, and is supplied to the AS/NZS standards that apply to Australian fixed wiring.

        Submains and high-load circuits often need more cable than a short offcut covers, without justifying a full 100 metre drum. A 20 metre cut lands in that gap: enough for a shed feed, a garage submain, or a switchboard relocation, with minimal surplus remaining on the truck. Buying by the cut simplifies job costing, because the length invoiced matches the length installed. The 16mm² conductor carries the current these distribution runs demand without stepping up to a heavier cross-section.

        Single core building wire pulls through conduit without the resistance of a sheathed cable, and the stranded copper conductor accommodates the bends a submain installation puts through it. Running individual cores lets the electrician determine the colour arrangement at the switchboard rather than working around a fixed sheath configuration. Ordering a cut length instead of a drum takes storage and offcut wastage out of the quotation, which matters on fixed-price contracts. Stock is typically Electra or Prysmian, so the cable supplied is the cable specified.

        Features

        • 16mm² single core — one insulated conductor per cable, sized for submains and other high-load circuits across residential, commercial and industrial work.
        • 20 metre cut length — covers medium runs where a short offcut falls short and a full 100 metre roll is more than the job needs.
        • Stranded copper conductor — the 16BW-B20 bends through conduit and around switchboard gear more easily than a solid conductor of the same size.
        • PVC insulation — insulated for fixed wiring in conduit, switchboards, and other protected cable routes.
        • Black insulation — the 16BW-B20 is supplied in black across the full 20 metre length, with no sheath colour to work around.
        • Unsheathed construction — no outer sheath over the insulated core, which keeps the overall diameter down when calculating conduit fill.
        • Protected routes only — the 16BW-B20 carries a single layer of insulation, so it belongs in conduit or another protected route rather than an open or buried run.
        • Cut-to-order supply — sold as a measured cut rather than a part-used drum, so the metres invoiced are the metres delivered.
        • AS/NZS compliant — supplied to the Australian and New Zealand standards that apply to fixed building wire.
        • Electra or Prysmian supply — stock is typically Electra or Prysmian, with Apec, Advance Cables, or Olex used occasionally on availability, all compliant.
        • 3.600kg package weight — the 20 metre cut ships as a single coil, light enough to handle without a second set of hands.
        • One year warranty — covered for one year in both domestic and commercial use, handled as a return to Sparky Direct.

        Where to use

        • Submain runs — the 16BW-B20 suits submains feeding a shed, garage, or granny flat from the main switchboard.
        • High-load final circuits — sized for circuits drawing heavy current, such as large appliance and machinery feeds.
        • Switchboard and enclosure wiring — run inside boards, meter boxes, and enclosures where the core stays protected.
        • Conduit runs — pulls through rigid and corrugated conduit on new work, rewires, and extensions.
        • Commercial fitouts — suits fitout work where individual cores are run to boards and distribution points.
        • Industrial installs — used for plant and machine feeds inside conduit or ducting.
        • Switchboard relocations — the 20 metre cut covers a board move or a submain upgrade without opening a full drum.
        • Renovation subboard work — the 16BW-B20 covers added subboards on renovations and extensions.

        The 16BW-B20 is a single insulated core with no outer sheath, so it is not suitable for unprotected surface runs and is not rated for direct burial. Run it in conduit or another protected cable route. Installation and termination are work for a licensed electrician under the wiring rules that apply in your state.

        (16BW-B20)

        The 16BW-B20 is a 16mm² single core building wire used for submains, high-load circuits, and general fixed wiring in residential, commercial, and industrial installations. It is run in conduit, switchboards, and other protected cable routes.

        Fixed wiring work must be carried out by a licensed electrician in accordance with the wiring rules and the regulations that apply in your state. Confirm cable size, circuit rating, and route with your installer before ordering.

        Yes. The cable is made for use in conduit, switchboards, meter boxes, and other protected installations. It is a single insulated core with no outer sheath, so it is not intended for unprotected surface runs or direct burial.

        Building wire carries one layer of insulation over the conductor and relies on conduit or an enclosure for mechanical protection. Single double insulated cable, such as the 7-170-1B 16mm 10M black SDI cut, adds a second outer layer for use where that extra protection is wanted.

        Stock is typically supplied by Electra or Prysmian. Apec, Advance Cables, or Olex are used occasionally, based on availability. All brands supplied are AS/NZS compliant for Australian fixed wiring.

        A 20 metre cut suits medium runs such as a shed feed, garage submain, or board relocation, where a full roll leaves most of the drum unused. Sparky Direct also stocks 16mm building wire in 100 metre rolls, including 7-170BWR in red, for larger runs.

        Warranty runs for one year in both domestic and commercial use, starting from the invoice date, with returns handled directly by Sparky Direct. Warranty is void if the product is not installed by a licensed electrician. A 100-day money-back guarantee also applies to unused stock.

        The Electra Cables 16BW-B20 is available online from Sparky Direct, with Australia-wide delivery to any state or territory including regional areas. Sparky Direct is an Australian electrical wholesaler established in 2005, supplying more than 500,000 customers with transparent trade pricing.

        100-Day Fuss-Free Returns
        We want you to love what you buy—but if you change your mind, that’s okay too. That’s why Sparky Direct offers a 100-day money-back guarantee.

        • Items must be unused, with all parts, accessories, and original packaging.
        • We can’t accept returns if the product is damaged, incomplete, or not in resalable condition.
        • Proof of purchase is required.
        • Return shipping is the responsibility of the customer. 

        If your item isn’t in its original condition, please contact us before returning it—we might save you time and money.

        All products come with a manufacturer’s or supplier’s warranty

        • Warranty starts from the Invoice Date
        • Some suppliers offer in-home warranties and handle claims directly, so you won’t need to uninstall or return the product. Chat with us to check if your product qualifies.
        • Sparky Direct isn’t responsible for losses caused by product failure.
        • Warranties are void if products aren’t installed by a licensed electrician.

        Damaged or Faulty Goods
        If your order arrives damaged or is faulty, let us know within 24 hours.

        • Sparky Direct will pay for return shipping via an emailed return label.
        • If the fault is confirmed, we will send you a replacement item or provide a refund.

        Contact us via our chat to arrange the return.

        Exclusions
        We can’t accept returns for:

        • Items that have been installed, modified, or used
        • Clearance, End of life, Discontinued, or special order items (unless faulty)
        • All PPE Items
        • Goods returned without original packaging or proof of purchase

        How to Request a Return

        1. Contact our customer service team with your order number.
        2. Confirm it’s eligible under our return or warranty policy.
        3. Pack the item securely and return it using a trackable service.
        4. Once we receive and inspect it, we’ll process your refund or replacement.

        Warranty starts from Invoice Date

        Domestic Use: 1 Year
        Commercial Use: 1 Year
        Warranty Method: Return to Sparky Direct

        These specifications and characteristics outline physical, mechanical, electrical details.

        Brand Electra-Cables
        SKU 16BW-B20
        Package Weight 3.600kg
        TYPE VALUE
        Type Cable Cut
        Colour Black
        Cable Type 16mm Black Building Wire
        Cable Length 20M

        Electrical and HVAC products sold by Sparky Direct are intended for installation by licensed and appropriately qualified professionals in accordance with applicable Australian Standards and regulatory requirements. Customers are responsible for ensuring that any product purchased, including any related or associated components, is compatible and suitable for their intended installation and application.

        Sparky Direct does not provide installation advice and does not assess product suitability for individual circumstances unless expressly confirmed in writing. Customers must confirm correct product selection, compatibility, compliance, and suitability with a licensed or appropriately qualified professional prior to purchase.

        Tools sold by Sparky Direct must be used safely and in accordance with the manufacturer’s instructions. Customers are responsible for ensuring they have the necessary knowledge and competence to operate any tool purchased. If you are unsure how to safely or correctly use a tool, do not use it and seek guidance from the manufacturer or a suitably qualified professional.

        Nothing in this clause limits or excludes any rights or guarantees available under the Australian Consumer Law.

        For website terms and conditions https://www.sparkydirect.com.au/terms-of-use

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